'''
Created on 2011-8-8

@author: songxk
'''
#here we must use dictionary , can not use list ,we can not evaluate in a dictionary
node1 = {
    'node1_1' : '1.1',
    'node1_2' : '1.2',
    'node1_3' : '1.3',
    'node1_n' : '1.4'
}

node2 = {
    'node2_1' : '2.1',
    'node2_2' : '2.2',
    'node2_3' : '2.3',
    'node2_n' : '2.4'
}
node3 = {
    'node3_1' : '3.1',
    'node3_2' : '3.2',
    'node3_3' : '3.3',
    'node3_n' : '3.4'
}
node_n = {
    'node_n_1' : '4.1',
    'node_n_2' : '4.2',
    'node_n_3' : '4.3',
    'node_n_n' : '4.4'
}
root_node = [
    node1,
    node2,
    node3,
    node_n
]

queue = [
    root_node
]

print(queue)